12139619 has 2 divisors, whose sum is σ = 12139620. Its totient is φ = 12139618.

The previous prime is 12139609. The next prime is 12139627. The reversal of 12139619 is 91693121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12139619 - 2²⁰ = 11091043 is a prime.

It is a super-2 number, since 2×12139619² = 294740698930322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12139609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6069809 + 6069810.

It is an arithmetic number, because the mean of its divisors is an integer number (6069810).

Almost surely, 2^12139619 is an apocalyptic number.

12139619 is a deficient number, since it is larger than the sum of its proper divisors (1).

12139619 is an equidigital number, since it uses as much as digits as its factorization.

12139619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2916, while the sum is 32.

The square root of 12139619 is about 3484.1956030051. The cubic root of 12139619 is about 229.8273373320.

The spelling of 12139619 in words is "twelve million, one hundred thirty-nine thousand, six hundred nineteen".